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//===- llvm/GlobalIndirectSymbol.h - GlobalIndirectSymbol class -*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains the declaration of the GlobalIndirectSymbol class, which
// is a base class for GlobalAlias and GlobalIFunc. It contains all common code
// for aliases and ifuncs.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IR_GLOBALINDIRECTSYMBOL_H
#define LLVM_IR_GLOBALINDIRECTSYMBOL_H
#include "llvm/IR/GlobalObject.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/OperandTraits.h"
#include "llvm/IR/User.h"
#include "llvm/IR/Value.h"
#include "llvm/Support/Casting.h"
#include <cstddef>
namespace llvm {
class GlobalIndirectSymbol : public GlobalValue {
protected:
GlobalIndirectSymbol(Type *Ty, ValueTy VTy, unsigned AddressSpace,
LinkageTypes Linkage, const Twine &Name, Constant *Symbol);
public:
GlobalIndirectSymbol(const GlobalIndirectSymbol &) = delete;
GlobalIndirectSymbol &operator=(const GlobalIndirectSymbol &) = delete;
// allocate space for exactly one operand
void *operator new(size_t s) {
return User::operator new(s, 1);
}
/// Provide fast operand accessors
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant);
void copyAttributesFrom(const GlobalValue *Src) {
GlobalValue::copyAttributesFrom(Src);
}
/// These methods set and retrieve indirect symbol.
void setIndirectSymbol(Constant *Symbol) {
setOperand(0, Symbol);
}
const Constant *getIndirectSymbol() const {
return getOperand(0);
}
Constant *getIndirectSymbol() {
return const_cast<Constant *>(
static_cast<const GlobalIndirectSymbol *>(this)->getIndirectSymbol());
}
const GlobalObject *getBaseObject() const;
GlobalObject *getBaseObject() {
return const_cast<GlobalObject *>(
static_cast<const GlobalIndirectSymbol *>(this)->getBaseObject());
}
const GlobalObject *getBaseObject(const DataLayout &DL, APInt &Offset) const {
return dyn_cast<GlobalObject>(
getIndirectSymbol()->stripAndAccumulateInBoundsConstantOffsets(DL,
Offset));
}
GlobalObject *getBaseObject(const DataLayout &DL, APInt &Offset) {
return const_cast<GlobalObject *>(
static_cast<const GlobalIndirectSymbol *>(this)
->getBaseObject(DL, Offset));
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static bool classof(const Value *V) {
return V->getValueID() == Value::GlobalAliasVal ||
V->getValueID() == Value::GlobalIFuncVal;
}
};
template <>
struct OperandTraits<GlobalIndirectSymbol> :
public FixedNumOperandTraits<GlobalIndirectSymbol, 1> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GlobalIndirectSymbol, Constant)
} // end namespace llvm
#endif // LLVM_IR_GLOBALINDIRECTSYMBOL_H
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